Energy

Question 1

Potential Energy

Answer 1

Energy that has the potential to do work.

Question 2

Kinetic Energy

Answer 2

Energy that is quickly transformed into movement.

Question 3

Nuclear

Answer 3

relating to the nucleus of an atom.

Question 4

Mechanical

Answer 4

the motion of large objects

Question 5

Thermal

Answer 5

relating to heat.

Question 6

Movement

Answer 6

an act of moving.

Question 7

Chemical

Answer 7

a distinct compound or substance, especially one which has been artificially prepared or purified.

Question 8

Electric

Answer 8

of, worked by, charged with, or producing electricity.

Question 9

Light

Answer 9

the natural agent that stimulates sight and makes things visible.

Question 10

Sound

Answer 10

vibrations that travel through the air or another medium and can be heard when they reach a person’s or animal’s ear.

Question 11

Gravitational

Answer 11

relating to movement towards a centre of gravity.

Question 12

Law of Conservation of Energy

Answer 12

a law that states that energy cannot be made or lost. However, energy can be transformed from one type to another or transferred from one object to another.

Question 13

Electrical Energy

Answer 13

used to move charged particles through a wire from a power plant to our homes and businesses. The movement of a charged particle through a wire is called current, or more commonly, electricity.

Question 14

Gravitational Potential Energy

Answer 14

energy an object possesses because of its position in a gravitational field.

Question 15

Elastic Potential Energy

Answer 15

Elastic potential energy is Potential energy stored as a result of deformation of an elastic object, such as the stretching of a spring. It is equal to the work done to stretch the spring, which depends upon the spring constant k as well as the distance stretched.

Question 16

Efficiency

Answer 16

a measure of how much work or energy is conserved in a process.

Question 17

Convection

Answer 17

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Question 18

Conduction

Answer 18

the process by which heat or electricity is directly transmitted through the material of a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

• the process by which sound waves travel through a
• medium.
• the transmission of impulses along nerves.

Question 19

Radiation

Answer 19

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

Question 20

Density

Answer 20

the degree of compactness of a substance.

Question 21

Deciduous

Answer 21

Describes plants that lose their leaves during autumn and winter

Question 22

Insulators

Answer 22

A Material that is a Poor Conductor of heat.

Question 23

Radiant Heat

Answer 23

Heat transferred from the Sun to the Earth.

Question 24

Reflected

Answer 24

Bounced off.

Question 25

Transmitted

Answer 25

Passing through something such as Light or Sound passing through the air.

Question 26

Absorbed

Answer 26

Taken in.

Question 27

Luminous

Answer 27

Something that releases its own light.

Question 28

Incandescent

Answer 28

Describes objects that emit light when they are hot.

Question 29

Scattered

Answer 29

Describes light sent in many directions.

Question 30

Dispersion

Answer 30

Separation of the colours that make up White Light.